re PR rtl-optimization/10876 (Segfault when compiling KDE 3.1.2)
PR optimization/10876
* config/sparc/sparc.h (CONST_OK_FOR_LETTER): Add
new 'O' constraint for constant 4096.
(CONST_DOUBLE_OK_FOR_LETTER_P): Likewise.
* config/sparc/sparc.md (adddi3 expander): Canonicalize pattern.
Do not transform into MINUS insn for constant 4096.
(*adddi3_sp64 insn): Canonicalize pattern. Add new alternative
for constant 4096 as third operand.
(addsi3 expander): Remove.
(*addsi3 insn): Rename into 'addsi3'. Canonicalize pattern. Add
new alternative for constant 4096 as third operand.
(subdi3 expander): Do not transform into PLUS insn for constant 4096.
(*subdi3_sp64 insn): Add new alternative for constant 4096 as third
operand.
(subsi3 expander): Remove.
(*subsi3 insn): Rename into 'subsi3'. Add new alternative for
constant 4096 as third operand.
* doc/md.texi (Machine Constraints): Document new 'O' constraint for
the SPARC port.
From-SVN: r67426